Service manual

Example: Closed
Channel Resistance
Test
This example performs a closed channel resistance test of all measurement
paths. If a FET on resistance is >3.1 kΩ , the program prints a message
indicating which channel has failed. Before the closed channel
measurement, the program checks for stuck channels. If a stuck channel is
found, the program prints a message and halts.
10! RE-SAVE "CLOS_TEST"
20 ASSIGN @Dmm TO 722
30 ASSIGN @Mux TO 70914
40 DISP CHR$(129)
50 DIM Result(1,15),Tree(1,1),Path$(1)[4], Cc$[2],Ch$[2]
60 DATA HI,LO
70 READ Path$(*)
80 Cc$ = "01" ! Card number
90 !
100 ! Start test
110 !
120 CLEAR SCREEN
130 PRINT "Install Component Assembly and Test Fixture"
140 PRINT
150 PRINT " 1. Turn mainframe and Agilent 3458A DMM power OFF"
160 PRINT " 2. Connect GPIB cable between mainframe and DMM"
170 PRINT " 3. Install component assembly into mainframe"
180 PRINT " 4. Attach test fixture to component assembly"
190 PRINT " 5. Turn mainframe and DMM power ON"
200 PRINT " 6. Press Continue when ready to begin testing"
210 PAUSE
220 !
230 ! Measure closed channel resistance
240 !
250 FOR I = 0 TO 1
260 CLEAR SCREEN
270 PRINT TABXY(1,1), "Channel ";Path$(I);" to Direct ";Path$(I);"
Measurements"
280 PRINT TABXY(1,3),"Connect DMM Input HI lead to Channel
";Path$(I)
290 PRINT TABXY(1,4),"Connect DMM Input LO lead to Direct ";Path$(I)
300 DISP "Press Continue when connections are complete"
310 PAUSE
320 OUTPUT @Dmm;"PRESET NORM;FUNC OHM"
330 OUTPUT @Mux;"*RST"
340 !
350 ! Check for stuck channels
360 !
2-8 Verification Tests